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Mechanical Operations

Mechanical Operations
Colloid mills achieve size reduction mainly by

Cutting
Compression
Attrition
Impact

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Mechanical Operations
Ball mills and tube mills with flint or porcelain balls are used for size reduction of

Non-metallic ores
Rubber
Asbestos
Limestone

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Mechanical Operations
To remove very small amount of tiny solid impurities from liquid, we use a

Centrifugal filter
Coagulant
Vacuum filter
Pressure filter

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Mechanical Operations
The ratio of the actual mesh dimension of Taylor series to that of the next smaller screen is

2
√3
√2
1.5

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Mechanical Operations
The specific surface of sherical particles is proportional to (where, Dp = diameter of particle).

D²p
Dp
1/D²p
1/Dp

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Mechanical Operations
As per Taggart's formula, the capacity (kg/hr) of Jaw & Gyratory crushers (for gapes of 10 to 60 cms) is equal to (where, L = Length of feed opening, cms S = Maximum width of discharge opening, cms )

250 LS
93 LS
√LS
LS

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